Trash compactor with removable liner

ABSTRACT

In a trash compactor which includes a ram for compacting waste materials deposited in the compactor, a two-piece, reusable liner is positioned within the compactor to receive the waste material and facilitate removal of the waste material after compaction thereof. Each of the sections is formed of a fairly rigid material, such as polyethylene, and each is provided on its outer surfaces with ribs which serve to both strengthen the liner sections and prevent the liner from sticking to the interior surfaces of the drawer. Each of these sections is constructed of integrally formed, upstanding sidewalls and a bottom wall with one side wall of each of the sections being just high enough to retain liquids within the liner while permitting their ready assembly and disassembly.

Unite ate t 1 1 1111 3,807,299

Engebretsen Apr. 30, 1974 [54] TRASH COMPACTOR WITH REMOVABLE 3,537,39011/1970 Hinkel et a1. 100/229 LINER 3,601,953 8/1971 Boyd 1 100/229 X3,675,810 7/1972 Ross et al 100/229 UX [75] Inventor: Einar O.Engehretsen, Tlroy, Ohio OTHER PUBLICATIONS [731 1 The MamfaFtur'ngPamphlet Entitled Seco 4 pgs., June 23, 1971.

Company, Troy, Ohio [22] Filed: Sept. 27, 1971 Primary ExaminerBi1ly J.Wilhite F B' b 1, F h B pp No: 184,038 Attorney, Agent, or zrm 1e e renc& ugg

[57] ABSTRACT [52] US. Cl 100/218, 100/229 A, 220/8, In a trashCompactor which includes a ram f 220/63 R pacting waste materialsdeposited in the Compactor, a [51] Int. Cl B30b 15/32 twomiece, reusableliner is positioned within the [58] new of Search 220/8, 63 pactor toreceive the waste material and facilitate re- 220/2336; 100/229 229moval of the waste material after compaction thereof.

141/73 80; 53/124 B Each of the sections is formed of a fairly rigidmatei rial, such as polyethylene, and each is provided on its [56]Referencves Clted outer surfaces with ribs which serve to bothstrengthen UNITED STATES PATENTS the liner sections and prevent theliner from sticking 279,854 6/1883 Belt 100/229 A to the interiorsurfaces of the a r- Each f h s 818,796 4/1906 Spengler 100/206 Xsections is constructed of integrally formed, upstand- 2,925,933 2/1960Watson et al.... 220/8 ing sidewalls and a bottom wall with one sidewall of 3,063,591 1.1/1962 Lagin estra 100/218 each of the sectionsbeing just high enough to retain 5 2 11:?

liquids within the liner while permitting their ready asor e t 3,463,3438/l969 Asenbauer.... 220/8 Sembly and dlsassembly' 3,527,439 9/1970Lawmaster 220/63 R 12 Claims, 10 Drawing Figures PNENYEBAMMQM sum 1 or 2FIG-1 INVE/V TOR EINAR O. ENGEBRETSON 0% ATTORNEYS v TRASH COMPACTORWITH REMOVABLE LINER BACKGROUND OF THE INVENTION The per capitaproduction of waste material, particularly in the United States, hasincreased greatly in recent years and the problems of disposing of thisincreased waste material, which has been compounded by a sharp increasein population, has resulted in numerous proposals for solutions of thisproblem. One method proposed involves the compacting of such materialsto reduce the volume thereof and thereby facilitate their disposition.In addition to compactors utilized on a more or less commercial basis,as in refuse collection trucks, other devices have been developed foruse in compacting refuse at the point of origin.

Many of these units, which are typified by the home installed units,utilize disposable bags which are placed within the compactor to receivethe refuse and into which the material is compacted. Such bags are generally of a special, laminated construction which incorporates layers forstrength and other layers for moisture proofing. Since these bags aregenerally used only once they represent a continuing expense for thecompactor user and possibly, detract from the acceptance of such units.

Other units of this type utilize a one-piece, more or lessself-supporting container, into which the waste material is depositedand subsequently compacted. With this type of container, however, itwill be seen that problems arise in removing the compacted material fromthe container. While tapering the container side walls may provide somealleviation of this problem, it will be seen that this results in a lossof container volume and of course, there may still be difficulty inremoving the compacted materials particularly if it is wet or sticky. II

SUMMARY OF THE INVENTION The present invention comprises a compactorwhich utilizes a reusable, two-piece liner. The two sections whichcomprise the composite liner are formed of a substantially rigid,self-supporting material such as polyethlene. Each of the units includesintegrally formed upstanding side walls and a bottom wall, with one sidewall of each of these sections being just high enough to retain anyliquids within the section but yet low enough to facilitate assembly ofthe sections and subsequent disassembly for removal of the compactedmaterial therefrom.

Each of the sections also has ribs integrally formed on the outsidethereof to both provide further strengthening of the unit and to preventthe sections from sticking to the interior of the drawer within whichthey are received. Handles are fonned in each section and correspondingnotches are formed in the upper edges of the .side walls of the drawerso that the handles may readily be grasped when the drawer is pulled outto facilitate removal of the liner and the compacted material therein.

Because the liner is formed as two, substantially rigid sections, thecompacted material is readily removed by separating the two linersections.

BRIEF DESCRIPTION OF THE DRAWING FIG. I is a side elevational viewshowing a compactor with the liner received therein;

FIG. 2 is a view similar to FIG. 1 but with the drawer retracted andparts broken away for clarity;

FIG. 3 is a perspective view of the assembled line sections;

FIG. 4 is a perspective view of one of the sections shown in FIG. 3;

FIG. 5 is a cross-sectional view of the liner with one section of theliner shown in a tilted position in phantom lines;

FIG. 6 is a view taken on line 66 of FIG. 3;

FIG. 7 is a perspective view of a composite liner of cylindricalconfiguration;

FIG. 8 is a side view similar to FIG. 1 but showing a liner in a secondtype of compactor;

FIG. 9 is a view showing the liner of the present invention in a thirdtype of compactor; and

FIG. 10 is a perspective view showing the liner with a disposable bagpositioned therein.

DESCRIPTION OF THE PREFERRED EMBODIMENTS 14 between an accessible,noncompacting positionshown in FIG. 1 and a compacting position shown inFIG. 2. Housing 11 also encloses a ram 16 carrying a motor 18 anddriving a chain 20. Chain 20 wraps three, triangularly disposed ballnuts 22 (only two of which are shown in FIG. 2) which threadably engagestationary screw-threaded rods 24. The housing 11 is also provided withan upper door 26, pivotally mounted to move between the positions shownin FIGS. 1 and 2. Received within the receptacle or drawer 12 is a liner32 which, as best seen in FIGS. 3 through 6, includes a pair ofcooperating sections 34 and 36. Section 34 is formed of a substantiallyrigid material such as polyeythene and includes upstanding walls 38, 40,42 and 44. Walls 38, 40 and 42 are of substantially the same height asthe height of the sidewalls of the receptacle or drawer 12. Upstandingwall 44, however, is appreciably shorter than the remaining walls, asbest seen in FIGS. 3 and 5 of the drawings.

The second section 36, like the first section 34, is also formed of asubstantially rigid material such as polyethylene. Sections 36 alsoinclude upstanding walls 46, 48 and 50 which are substantially the sameheight as that of the receptacle l2. Disposed in spaced parallelrelationship to the wall 46 is a second upstanding wall 52 which, asbest seen in FIG. 4, is appreciably shorter than the height of the wall46 and is approximately the same height as the height of the wall 44.

The section 36, like the section 34, is preferably molded in one piececonstruction with all four upstanding walls and the bottom wall 54formed integrally with each other. It will also be noted that the lineris provided with handles 56 and 58 formed in the sections 34 and 36,respectively. Additionally, the drawer or sliding receptacle 12 isprovided with a notch 60 in each of its upper edges of its sidewalls,only one of which is shown in FIG. 1, with the handles 56 and 58 alignedwith and accessible through notches 60. Finally, it will be noted thateach of the sections is provided with ribs 62 integrally formed on theexterior surfaces of the liner sections and extending from the topsthereof to points spaced from the bottom walls thereof.

In operation the two sections 34 and 36 are assembled, as shown in FIG.3, and inserted in the drawer or sliding receptacle 12 with the handlesthereof accessible through the notches 60 in the side walls thereof.Small articles of waste material may be deposited in the compactor bypivoting the door 26 downwardly to the position shown in FIG. 1. Thesmaller articles of waste material will lie on the inclined surface 30of the drawer l2 within the compactor until such time as the drawer orreceptacle 12 is moved outwardly toward the position shown in FIG. 1, atwhich time the articles will drop into the liner 32. Larger pieces ofwaste material are deposited in the liner by sliding the receptacle 12outwardly to the position shown in FIG. 1.

After a quantity of material has accumulated in the liner the ram 16 isactuated by energizing the motor 18. This drives the chain 20 wrappingthe ball nuts 22, which causes the entire unit to move downwardly on thestationary screw-threaded rods 24 and enter the liner 32 to compact thematerial therein. After compacting the material the ram 16 movesupwardly, permitting either more material to be placed in the liner orremoval of the compacted material from a compactor. In the latter case,the drawer or receptacle 12 is again moved outwardly to thenoncompacting position shown in FIG. I and the liner is removedtherefrom by grasping the handles '56 and 58.

In this regard it should be noted that not only do the ribs 62strengthen the liner sections but they also prevent the liner fromsticking to the interior surface of the drawer. After the liner isremoved from the drawer the section 36 may be tilted from the section 34as shown in phantom lines of FIG. of the drawings. It will be seen thatthe short wall 44 of the section 34 facilitates this operation, whilethe short wall 52 of the section 36 thereafter permits the ready removalof the compacted material from the liner section 36.

Usually the material will be compacted to the extent that it can bedisposed of as a single mass in any collection facility. Although thewalls 44 and 52 are low enough to permit the sections to be readilyassembled and disassembled, they are also high enough to insure that anyliquid contained in the waste material is retained in the system anddoes not seep down into the drawer or is otherwise spilled when thesections are separated. After cleaning, if necessary, the liner sectionsare reassembled to form the composite liner of FIG. 3, placed in theopen drawer 12, and the drawer slid back into the housing to thecompacting position to repeat the operation described above.

It will be appreciated that while a liner of substantiallyrectangular'cross section having the upstanding walls thereof extendingnormal to its bottom wall will provide the greatest volume, it may bedesirable in some situations to 'utilize a liner having a crosssectionalconfiguration other than rectangular. For example, if the ram of thecompactor was circular in configuration it would generally be desirableto utilize a cylindrically shaped liner. This is illustrated in FIG. 7of the drawings wherein a cylindrically shaped liner 64 is illustratedformed of two sections 66 and 68. Each of the sections includesupstanding wall portions 70 and 72, respectively, their bottom wallportions extending normally to the upstanding wall portions, similarlyto the embodiment described above. Additionally, the upstanding wallportions include reduced portions, only one of which is shown at 74although it will be appreciated that the section 72 has a similarreduced portion flanked by the full height portion 76. As in theprevious embodiment, when it is desired to remove the liner from thecompactor the handles 76 will be grasped and the sections moved apart inthe direction indicated b the arrows.

FIG. 8 shows an additional type of compactor in which the sectionalliner of the present invention finds utilization. In the compactor 80shown in FIG. 8 of the drawings a motor 82 drives a shaft 84 havingsprocket 86 mounted on the lower end thereof. Sprocket 86 drives a chain88 which wraps a pair of sprockets, only one of which is shown at 90.Each of these sprockets 90 are fastened to the lower ends of spaced,parallel drive screws 92 mounted on opposite sides of the compactor 80.The ram 94 is provided with threaded couplings on each side thereofthreadably engaging the drive screws 92 so that upon energization of themotor 82 the ram 94 is caused to move upwardly and downwardly within thecompactor housing. A. drawer 96, shown in dotted lines in the. openposition, receives the composite, two-piece liner, such as the liner 32if the ram is of rectangular configuratiom As noted above thecomposite'liner of the present invention may be used in any of severaldifferent types of compactors. FIG. 9 shows still a further type ofcompactor which may advantageously utilize a liner, such as the liner 32or 64. In the compactor shown in FIG. 9 a drawer for holding the lineris dispensed with and the liner merely placed in the compactor withmeans, illustrated somewhat diagramatically in FIG. 9 as a stop member102, provided to position the liner within the compactor correctly withrespect to the ram 104. Additionally, it will be noted that the ram 104will be powered by a scissors jack arrangement 106. It will also benoted that the door 108 to the compactor is of composite construction,including upper and lower sections 110 and 112, respectively. The twosections are hinged along one vertical edge of the compactor and may beopened together to the dotted line position shown in FIG. 9. In thisposition the liner, 32 in FIG. 9, but it may of course be of the typeshown in FIG, 7, can be removed from the compactor, emptied andreplaced. Usually, however, when it is desired to merely deposit wastematerials in the liner the upper door 110 may be pivoted downwardlyabout its horizontal hinge connection'to the .lower door section 112 asshown in dotted lines and indicated by the arrow in FIG. 9 of thedrawings.

One advantage of the liner of the present invention is, of course, thefact that it is reusable and, therefore, less expensive over a period ofcontinued use than replaceable bags. However, if the user of thecompactor finds it desirable the liner of the present invention can ofcourse be used as a support for disposable bags. Thus, as seen in FIG.10 of the drawings, a bag 114 or other covering of flexible material maybe droped over the inner surface and upper edges of the liner and, iffurther desired, secured in place by means such as the U-shaped clips116. Although not affording the cost advantage gained. by using theliner alone, this approach does provide the advantage, as compared tothe use of bags above, in that the removal of the bags from thecompactor is facilitated and the strength of the bags necessary issomewhat less than that that would be necessary if the bags were usedwithout additional support.

From the above it will be apparent that the present While the forms ofapparatus herein'described constitutes preferred embodiments of theinvention, it is to be understood that the invention is not limited tothese precise forms of apparatus, and that changes may'be made thereinwithout departing from the scope of the invention which is defined inthe appended claims.

What is claimed is:

1. Trash compacting apparatus of the type described comprising:

a. a compactor housing,

b. a ram mounted in said housing,

0. a drawer slidably mounted in said housing and movable between acompacting position within said housing opposite said ram andanoncompacting position displaced from said compacting position,

.d. a liner received in said drawer and movable there with between saidcompacting and noncompacting position,

e. said liner being comprised of a plurality of substantially rigid,liquid impervious, separable liner sections positioned in said drawerwith portions thereof in overlapping relationship to each other definingsaid liner, and

f. means for reciprocating said ram into and out 0 said liner to compactmaterial therein.

2. The apparatus of .claim 1 wherein:

a. said liner comprises two independent said sections having similarportions disposed in overlapping relationship to each other.

3. Theapparatus of claim 1 wherein:

a. said liner sections each include upstanding wall portions and abottom portion, and

b. one of said sections is received in the other of said sections withsaid bottom portion of said one section overlying said bottom portion ofsaid other section.

4. The compactor of claim 1 further comprising:

a. means defining strengthening ribs formed integrally on at least theexterior surfaces of said composite liner when said sections thereof arein said interengaged relationship.

5. Trash compacting apparatus of the type described comprising:

a. a compactor housing,

b. a ram mounted in said housing,

0. a plurality of self-supporting, separable liner sectionscooperatively defining an open mouth liner adapted to receive items oftrash,

(1. means for positioning said liner in a compacting position withinsaid housing with the open mouth of said liner opposite said ram,

c. said liner sections each including upstanding wall portions and abottom portion,

f. at least one upstanding wall portion being of appreciably less heightthan the height of the remainder of said liner, I

g. one of said sections being received in the other of said sectionswith said bottom portion of said one section overlying said bottomportion of said other section and with said lower wall portions oppositeeach other when said liner is in said compactingposition to form acomplete side enclosure, h. meansfor reciprocating said ram intoand outof said liner through said open mouth thereof to compact materialtherein, and

i. means providing access to said liner for removal thereof from saidhousing to unload compacted trash from said liner.

6. The apparatus of claim 5 further comprising:

a. rib means formed integrally with at least the outer surfaces of saidliner and strengthening said sections to provide a self-supportingcomposite liner.

7. The apparatus of claim 6 further comprising:

a. handle means formed'in each of said liner sections to permit saidliner sections to be removed from said housing and facilitate separationthereof for removal of compacted trash therefrom.

8. Trash compacting apparatus of the type described comprising:

a. a compactor housing,

b. a ram mounted in said housing,

0. a plurality of self-supporting, separable liner sectionscooperatively defining an open mouth liner adapted to receive items oftrash,

d. means for positioning said liner in a compacting position within saidhousing with the open mouth of said liner opposite said ram,

e. said positioning means including a receptacle receiving said linerand means for moving said receptacle with said liner therein betweensaid compacting position and a noncompacting position,

f. handle means associated with said liner 'to permit said liner to beremoved from said receptacle,

g. means defining notches in said receptacle in alignment with saidhandles,

h. means for reciprocating said ram into and out of said liner throughsaid open mouth thereof to compact material therein, and

i. means providing access to said liner for removal thereof from saidhousing to unload compacted trash from said liner.

9. Trash compacting apparatus of the type described comprising:

a. a compactor housing,

b. a ram mounted in said housing,

c. an open mouth liner adapted to receive items of trash,

d. said liner comprising a pair of substantially rigid sections eachincluding a bottom wall and upstanding side and front and back walls,

e. one side wall of each section being of appreciably less height thanheight of the remaining upstanding walls of said section,

f. said liner being disposed in said housing with said bottom walls inoverlying relationship and said one side wall of each flanked by a sidewall of the other of the same height as said front and back walls,

g. means for positioning said liner in a compacting position within saidhousing with the open mouth of said liner opposite said ram,

b. means for reciprocating said ram into and out of said liner throughsaid open mouth thereof to compact material therein, and i i. meansproviding access to said liner for removal thereof from said housing tounload compacted trash from said liner.

10. In a trash compactor including a compactor housing, a ram mounted insaid housing for reciprocal movement therein and means for providingaccess to the interior of said housing, the improvement comprising:

a. a plurality of self-supporting, interengaging liner sections receivedin said interior of said housing and cooperatively defining a composite,open mouth liner adapted to receive items of trash and said ram duringsaid reciprocal movement thereof,

b. said sections including shorter upstanding wall 1 portions ofappreciably less height than the remainder of said sections,

c. said shorter wall portions being overlapped by said remainder of saidsections of greater height to provide a complete side enclosure, and

d. means for positioning said composite liner within said interior ofsaid housing in a compacting position with the open mouth thereofopposite and .enterable by said ram.

11. In trash compacting apparatus having:

a. a compactor housing,

.b. a ram mounted in said housing,

c. a drawer slidably mounted in said housing and movable between acompacting position within said housing opposite said ram and anoncompacting position displaced from said compacting position, a

d. means for reciprocating said ram into and out of 8 said drawer,

e. a liner received in said drawer and movable therewith between saidcompacting and non-compacting position,

f. said liner being comprised of a plurality of substantiallyself-supporting separable liner sections positioned in said drawer withportions thereof in overlapping relationship defining a complete trashreceiving container.

12. Trash compacting apparatus comprising:

a. a compactor housing including walls forming a trash receivingreceptacle,

b. a ram mounted in said housing,

0. a plurality of self-supporting, separable liner sections arranged inoverlapping relationship and cooperatively defining an open mouth linerhaving a bottom and side walls and adapted to receive items of trash,

d. means for positioning said liner in a compacting position within saidhousing in supportive contact with said walls of said receptacle andwith the open mouth of said liner opposite said ram,

e. means for reciprocating said ram into and out of said liner throughsaid open mouth thereof to compact materialtherein, and

f. means providing access to said receptacle for removal of said linerfrom said housing to unload compacted trash from said liner.

1. Trash compacting apparatus of the type described comprising: a. acompactor housing, b. a ram mounted in said housing, c. a drawerslidably mounted in said housing and movable between a compActingposition within said housing opposite said ram and a noncompactingposition displaced from said compacting position, d. a liner received insaid drawer and movable therewith between said compacting andnoncompacting position, e. said liner being comprised of a plurality ofsubstantially rigid, liquid impervious, separable liner sectionspositioned in said drawer with portions thereof in overlappingrelationship to each other defining said liner, and f. means forreciprocating said ram into and out of said liner to compact materialtherein.
 2. The apparatus of claim 1 wherein: a. said liner comprisestwo independent said sections having similar portions disposed inoverlapping relationship to each other.
 3. The apparatus of claim 1wherein: a. said liner sections each include upstanding wall portionsand a bottom portion, and b. one of said sections is received in theother of said sections with said bottom portion of said one sectionoverlying said bottom portion of said other section.
 4. The compactor ofclaim 1 further comprising: a. means defining strengthening ribs formedintegrally on at least the exterior surfaces of said composite linerwhen said sections thereof are in said interengaged relationship. 5.Trash compacting apparatus of the type described comprising: a. acompactor housing, b. a ram mounted in said housing, c. a plurality ofself-supporting, separable liner sections cooperatively defining an openmouth liner adapted to receive items of trash, d. means for positioningsaid liner in a compacting position within said housing with the openmouth of said liner opposite said ram, e. said liner sections eachincluding upstanding wall portions and a bottom portion, f. at least oneupstanding wall portion being of appreciably less height than the heightof the remainder of said liner, g. one of said sections being receivedin the other of said sections with said bottom portion of said onesection overlying said bottom portion of said other section and withsaid lower wall portions opposite each other when said liner is in saidcompacting position to form a complete side enclosure, h. means forreciprocating said ram into and out of said liner through said openmouth thereof to compact material therein, and i. means providing accessto said liner for removal thereof from said housing to unload compactedtrash from said liner.
 6. The apparatus of claim 5 further comprising:a. rib means formed integrally with at least the outer surfaces of saidliner and strengthening said sections to provide a self-supportingcomposite liner.
 7. The apparatus of claim 6 further comprising: a.handle means formed in each of said liner sections to permit said linersections to be removed from said housing and facilitate separationthereof for removal of compacted trash therefrom.
 8. Trash compactingapparatus of the type described comprising: a. a compactor housing, b. aram mounted in said housing, c. a plurality of self-supporting,separable liner sections cooperatively defining an open mouth lineradapted to receive items of trash, d. means for positioning said linerin a compacting position within said housing with the open mouth of saidliner opposite said ram, e. said positioning means including areceptacle receiving said liner and means for moving said receptaclewith said liner therein between said compacting position and anoncompacting position, f. handle means associated with said liner topermit said liner to be removed from said receptacle, g. means definingnotches in said receptacle in alignment with said handles, h. means forreciprocating said ram into and out of said liner through said openmouth thereof to compact material therein, and i. means providing accessto said liner for removal thereof from said housing to unload compactedtrash from said liner.
 9. Trash compacting apparAtus of the typedescribed comprising: a. a compactor housing, b. a ram mounted in saidhousing, c. an open mouth liner adapted to receive items of trash, d.said liner comprising a pair of substantially rigid sections eachincluding a bottom wall and upstanding side and front and back walls, e.one side wall of each section being of appreciably less height thanheight of the remaining upstanding walls of said section, f. said linerbeing disposed in said housing with said bottom walls in overlyingrelationship and said one side wall of each flanked by a side wall ofthe other of the same height as said front and back walls, g. means forpositioning said liner in a compacting position within said housing withthe open mouth of said liner opposite said ram, h. means forreciprocating said ram into and out of said liner through said openmouth thereof to compact material therein, and i. means providing accessto said liner for removal thereof from said housing to unload compactedtrash from said liner.
 10. In a trash compactor including a compactorhousing, a ram mounted in said housing for reciprocal movement thereinand means for providing access to the interior of said housing, theimprovement comprising: a. a plurality of self-supporting, interengagingliner sections received in said interior of said housing andcooperatively defining a composite, open mouth liner adapted to receiveitems of trash and said ram during said reciprocal movement thereof, b.said sections including shorter upstanding wall portions of appreciablyless height than the remainder of said sections, c. said shorter wallportions being overlapped by said remainder of said sections of greaterheight to provide a complete side enclosure, and d. means forpositioning said composite liner within said interior of said housing ina compacting position with the open mouth thereof opposite and enterableby said ram.
 11. In trash compacting apparatus having: a. a compactorhousing, b. a ram mounted in said housing, c. a drawer slidably mountedin said housing and movable between a compacting position within saidhousing opposite said ram and a non-compacting position displaced fromsaid compacting position, d. means for reciprocating said ram into andout of said drawer, e. a liner received in said drawer and movabletherewith between said compacting and non-compacting position, f. saidliner being comprised of a plurality of substantially self-supportingseparable liner sections positioned in said drawer with portions thereofin overlapping relationship defining a complete trash receivingcontainer.
 12. Trash compacting apparatus comprising: a. a compactorhousing including walls forming a trash receiving receptacle, b. a rammounted in said housing, c. a plurality of self-supporting, separableliner sections arranged in overlapping relationship and cooperativelydefining an open mouth liner having a bottom and side walls and adaptedto receive items of trash, d. means for positioning said liner in acompacting position within said housing in supportive contact with saidwalls of said receptacle and with the open mouth of said liner oppositesaid ram, e. means for reciprocating said ram into and out of said linerthrough said open mouth thereof to compact material therein, and f.means providing access to said receptacle for removal of said liner fromsaid housing to unload compacted trash from said liner.